Brad & Jen Vs. Prince William & Kate Middleton: Who’s The Most Likely To Get Engaged Over Valentine's Weekend?

Who do YOU think is most likely to pop the question?

Will it be Brad Pitt and Jennifer Aniston? Prince William and Kate Middleton? Simon Cowell and Mezhgan Hussainy or Sienna Miller and Jude Law? You should place your bets on who’s the most likely couple to get engaged over the most romantic weekend of the year, HollywoodLifers! Before you go rushing off to Vegas, check out which celebs have the best odds of getting engaged this weekend — and shocking (!) as this may be, the gal most likely to get a blingin’ ring ain’t Jen.

Out of all celebrity couples, British bookmaker William Hill says odds are 4 to 1 that American Idol judge Simon, 50, will propose to his much younger girlfriend, 36-year-old make-up artist Mezhgan, over Valentine’s weekend.

Why are the odds so great for the notoriously cranky Idol judge?

“Having spoken to a few punters, the theory seems to be that they have been dating for some time behind the scenes, and introducing her to the public is the first step to getting together permanently,” Hill spokesman Rupert Adams explained to the UK’s Mirror.

If you’re brave enough to actually bet on any of the other couples, be prepared to win big if they actually do pop the question. (We’re sure that won’t be a problem for you…)

Prince William, 27, and his girlfriend Kate Middleton, 28, have been dating for seven years. Hill puts their odds at 5 to 2.

Sienna Miller, 28, and Jude Law, 37, have been dating off and on for nearly seven years. Their odds? 10 to 1.

Brad Pitt, 46, and Jennifer Aniston, 41, are DIVORCED and currently in other relationships (with Angelina Jolie and Gerard Butler, respectively), so it’s pretty funny that anyone would put money down on this, but Hill says their odds of getting re-engaged over Valentine’s are actually 16 to 1.

Errrr….right. We’re sticking with logic here. Brad and Jen? What a waste of money! Simon and Mezhgan? We’re so there!